Improved mode of operating the mechanism of printing telegraphic machines



v & J. REEVHG; TYLER. MODE OROPERATING THE MECHANISM OF PRINTING TELEGRAPHIQMAGHINESQ No. 21,024. PATENTED JULY 27, 1858, 2 SHEETS-81132131.-

T.& J. REEVE &-s.'M. TYLER. MODE 0F OPERATING THE MECHANISM OF PRINTING TBLBGBABHIOMAOHIHBS.-

No. 21,024. PATB'NTED JULY 21, 1853.

I 2'BHEE-TS-SHEBT 2.

' T. REEVE, JQREEVE, AND S. llLTYLER, OF BROOKLYN, NEW YORK;

IMPROVED MODE 0F OPERATING THE MECHANISM OF PRINTlNG TELEGRAPHIC MACHINES.

Specification forming part of Letters Patent No. 214mm, dated July 27, 1858.

To all whom. it may concern:

Be it known that we, THOMAS REEVE, J o- SEPH REEVE, and SIDNEY M. TYLER, all of the city of Brooklyn and State of New York, have made-certain improvements in or on a telegraphic instrumentinvented by Edmund F. Barnes, and designated as an Embossing Self-Adj ustin g Telegraph and we do hereby declare that the following is a full, clear, and exact description thereof, reference beinghad to the accompanying drawings, and to the letters of reference marked thereon, and making a part of this specification, like letters being generally used as those in said Barnes appli; cation to designate like parts of such instrument. A

The invention of'said Barnes consists of a tctegr'aphicinstrumentmakin g pi-inted'l'etters,

which can be used under disadvantageous circumstances, and which by causing the typewheel and circuit-breaker to return to a given startin g-point after printing such letter is selfadjusting or selfregulating. Our improvements thereon refer to the mechanical arrangement or devices for helping carry such invention into practice. In Barnes invention the fin ger-kys used for transmitting were arranged upon asenii-cylindrical plate, placing them in a position i'nconvenientfor the operator to see and manipulate, and the connection between such keys and the swing-frame, so called, was by or partially by a sliding contact. 5

These difliculties or objections we have obviated by arranging the keys on a flat plate in a semicircular form, and thereby also obtaining a direct connection between them and the swing-frame. 1

Figure I shows such arrangement, and Fig. 2 illustrates the direct connection between the keys andswing-frame.

As seen in Fig. 2, the keys at a pass through the key-board A and swing-frame B and the fixed plate underneath it, such keys being smaller at their lower end, which passes through the swing-frame, &c. When anykey is depressed a shoulder upon it strikes against the swing-frame and presses it directly down, and, as in Barnes invention, acts through the connections 3 31 32, rod 0, and clutch b, to throw up the clutch-wheel 9 into contact with ihe clutch f to revolve the hollow shaft G, and

the circuit-breaker arm 01 connected therewith, until such arm shallcome in contact with the extremity of any depressed key. The key is thrown up by the spring 1 about it, and the spring 6 carries back the swing-frame, disconnecting g and f. v t

In Barnes invention, also, the shaft 0, Fig. 2, within the hollow-shaft O, was square at that part on which the clutch-wheel g and the 'bar m, with its clutch-pins 12 12, moved up round shaft in place of the square one, and in placing the clutch-pins 12 12 at a greater distance from the shaft, at or near-the distance of the semi-diameter of the wheel g. As the shaft 0 is continually revolving while thewheel -g and. its connections are moved up :and down, the square form of the shaft rendered the movement of those parts less quick and easy than with the use of the round shaft substituted by us, and' the friction of leverage is also decreased by carrying the points 12 12 a greater distance from the shaft c.

Our principal improvement consistsin the arrangement of an independent friction upon the type-wheel shaft T, so as to give a more prompt and instantaneous action to such shaft and the type-wheel upon it whenever the escapement-wheel O is released by the action of the magnet. This shaft, like most of the others in the in strument,is so arranged as to the gearing upon it that the gearing may rotate while the shaft is at rest,.and the shaft, when re= volved, is caused to revolve byafriction-plate and box, the latter of which is connected to such shaft through a coiled spring, '1, one end of which is attached to the spring-box and the other to the shaft T. Such spi ing is set up to and held at a given tension within its box, and the friction causes such spring to wind ELbOiIUhELlf a revolution farther, but can not increase its tension beyond a given point. These features are necessary for the type-wheel shaft,whatever the arrangement of its friction.

- the desired friction.

In Barnes invention the shaft was revolved by africtiornthc arrangement of which is shown sult of such arrangement was to create friction upon the surfaces of f and X, and this friction, when'the action of the magnet liberated the escapement-wheel O, tended to produce a sluggish movement in such type-wheel shaft and theneccssary revolutions of the type-wheel. Ourimprovement consists in constructing an independent friction, and is more plainly seen in Fig. 4, which is an enlarged sectional view of the type-wheel shaftT of Fig. 2. The change in position of the pinion X and spring-box r is not material, the arrangement of the friction being most important. Upon the shaft T is the friction-box S, connected therewith, as de scribed above, by the spring 1", and aboutthis shaft we place a hollow shaft or sleeve, T, which carries the pinion X and the friction- .plate within the box S. Upon the frictionbox S" is a top plate, 10, which is fastened by screws or otherwise to the box S. Within this box is the friction-plate O, which is fast to the hollow sleeve T, upon which works also the set-screws S S, and between. the plates 19 and 0 is a washer, o 0, which may be a soft piece of common leather. The spring S", which is adjusted by the set-screws S, rests upon the top of the plate 12, and its power is exerted to force'or draw up the friction-plate 0 against the inside of the top plate and thus secure By this arrangement the spring S acts against two fixed points, the plate 1) and the set-screws S,hollow sleeve T, instead of against two points on the shaft T,

- and therefore does not produce or increase friction on the shaft T, the only friction on which is that produced by the weight of such sleeve and the parts thereon on the loose washer q.

Whenever the receiving parts of the instrument are put in motion the pinion X and the hollow shaft or sleeve T are constantly rotating, which at first revolves the'shaft T, and the friction tends to wind up the coiled spring toa certain point, after which the friction-plate rotates on its washer, and the shaft T stands at rest. As the shaft T is thus substantially relieved from all friction, except at its bearings, it instantly submits to the influence of the spring 0" the moment the arm of the magnet disengages a tooth of the escapement O; and revolves thetype-wheel to its proper letter, according to the numberof pulsations given at the escapement.

Another improvement consists in so a'rranging apart of the gearing upon the power-shaf t, so called, that only a portion of the working parts of the instrument or the whole may be.

operated, as desired. a

Each of said Barnes instruments is adapted both for transmitting and receiving messages, but only one of these operations is performed at the same time, and the particular parts used for such several purposes are distinct from each other, though moved by'a common power, and when used for transmitting any message there is no actual labor, an office being performed by the receiving portions of the instrument.

Our improvement consists in arresting the movement or revolution of the receiving parts of the instrument while the operator is engaged in transmitting a message, thus requiring of such operator less manual labor to work the machine, as a part is worked more easily than the wholewheu his attention is most demanded in transmitting, and again causing such receiving parts of the instrument to be instantly set in motion when required.

Our improvement is shown in Fig. 2 on shaft 0. Instead of placing the wheel w shown in section) and Y directlyupon the shaft 0, as was done by said Barnes, we place such wheels upon a sleeve-setting over the shaft 0, and which easily allows such shaft to revolve within it and without rotating such wheels with it. Such sleeve and its wheels rest upon the shoulder or plate t, which is-fixed to and revolves with the shaft 0. Through this plate t is a small hole, a'numbcr of like small recesses, t, being made in the under side of the wheel Y. Underneath this plate t is a movable col1ar,W, which has upon its upper surface a pin resting in the hole in the fixed plate t, and which can also be made at pleasure topass into the holes t" in the wheel Y. A forked rod, W ,embraces such movable collar W, and moves on a ful crum, Z, and to the other end of it connects the rod X, which passes through the upper plate, A, and may be moved with a'knob, K. When such knob is raised, as shown by the heavy lines in the drawings, the clutch W is forced down, carrying with it the pin t from out of the pinion Y anddisconnecting such pinion and the hollow sleeve to which it is attached from the shaft 0, and thus allowing the parts of the instrument moved by the pinion on such sleeve to stand at rest, so that only such parts as are worked from the wheel 11), and which are the transmitting portions, are in operation. As soon as the operator has sent his message and is ready to receive a communication from another place he presses down the knob K, which throws up the clutchcollar W and connects the hollow sleeve and its gearing with the shaft 0, and causes the receiving parts of the instrument to be set in operation. Thus the simple elevation or depression of the knob K disconnects or connects the receiving portions of the instrument which are the greatest in number, and demands from the operator the least exertion of manual labor at the time when his attention isrequired in sending a message. v i

What we claim as our invention, as improvements in the mechanical. arrangement of said Barnes telegraphic instrument, is

\ prompt and instantaneous action to such shaft and the type-wheel thereon whenever the magnet releeses the escapement-wheel-O.

4. Disconnecting the receiving portions of the in strument from the transmitting portions,

to assist the operator in trm'rsmitting, substan;

tially as described,

THOMAS nnnvn, Josnrn nnnvn. SIDNEY M. TYLER.

Witnesses:

WM. M eKA Y. S. D. LAW. 

